991ES 417 Functions Scientific Calculator with Writing Pad

991ES Multifunctional Scientific Calculators: Business calculator features 417 functions, deal For: General math and science, Pre-Algebra, Algebra 1 and 2, Geometry, Statistics and regressioncal culations, Calculus, fractions, decimals, Calculations involving specificnumber systems (BASE-N, binary,octal, decimal,hexadecimal), Complex number calculations, EQN, Matrix calculations, TABLE, VECTOR, SOLVE, Biology, Chemistry so on and it has memory function calculation more user-friendly

Scientific Calculators with Notepad: This scientific calculators for school and business intergrates calculation and notebook with a stylus pen. The lcd writing tablet enables you to take notes during the calculation, which do great help for study and work.

👉NOTE!Only Unlock the LOCK KEY will the writing area and the erase button work

Multiview: display shows 4 calculations at the same time on screen, greatly improves computational efficiency

Dual Power Solar Panel & Coin Battery: The replaceble coin battery is built in this scientific calculators. It is also powered by solar energy so you don't need to worry about battery depletion